Corsair

Corsair is an open source integration layer that helps AI products add secure, multi-tenant app connections.

Corsair is an open source integration layer designed for AI products and agents. It handles authentication flows, token refresh, rate limits, webhooks, and multi-tenant credential isolation so developers do not have to build or maintain that infrastructure. The platform supports features like permission modes for sensitive actions, hosted or self-hosted execution, and integrations with services like Gmail, Slack, Google Calendar, Airtable, and Notion. It works with TypeScript and allows developers to add custom integrations by opening a pull request or forking the repository. The hosted version acts as a relay that stores no user credentials or data, keeping information partitioned per tenant in your own database.

Corsair at a glance

Best for: Software engineer
Runs on: Web, API, self-hosted, open source
Pricing: Free plan; Hobby plan; Pro plan; Enterprise plan
Released: October 2025
Category: AI agent tool
Website: corsair.dev

Key features

Manage secure multi-tenant OAuth integrations
Set permission modes for sensitive actions
Configure triggers and workflows
Run hosted or self-hosted execution
Resolve credentials internally at call time
Partition data per tenant using webhooks and polling
Add custom integrations with open source TypeScript

Use it for

Send calendar invites and emails from an agent
Pull unshipped orders from Airtable
Trigger Slack messages based on file uploads
Manage permissions for destructive actions

Alternatives to Corsair

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OpenHarness — Manages Claude Code, Codex, and Hermes from a single command center.
BrowserOS — Runs entirely locally and lets AI agents use real user logins to complete tasks.
AgenticOS — Govern AI agents with budget controls, approvals, and audit logs on your own infrastructure.
Pipedream — Managed authentication and 10,000+ tools for connecting AI agents to APIs.
Agenta — Build and automate AI agents that run on your own infrastructure or the cloud.
AgentDock — It coordinates multi-device workflows and provides secure environment access.
OpenDots — Deploy specialized AI coworkers with dedicated computers and human-in-the-loop controls.
Agent2api — It combines multiple AI desktop client accounts into one local OpenAI-compatible API.

All Corsair alternatives